Q u o t e:
GC, I know you've said in other threads that "Well there will be times to use other things and it's not like you'd really notice the difference if it falls off, maybe you wouldn't have blocked", but you know in your heart it isn't true. If you're tanking you're locked into 3HP ShoRs, and then maybe a 1pt Inquisition or WoG. There will never, ever be a reason to lower Holy Shield in favor of WoG in terms of damage intake, and surely letting holy shield fall off would essentially make the tank's health continue to fall behind even if the heal were used in an emergency.
First, there is only darkness in my heart.
Second, we're talking about 15% block here, not 15% damage reduction. Sure over the course of a fight, you'd notice 15% block. But if you let Holy Shield drop for a few seconds you have virtually no way to know if that would even affect the next several seconds of the fight. Would you have blocked anyway? Great! You didn't need the Holy Shield. Would the boss have hit you even with the extra 15% block? Bummer, you wasted Holy Shield. If it's a dragon breathing on you, then the block does nothing.
We want Prot to be able to use Word of Glory sometimes and we're evaluating the best way to make that happen. We don't want a model where Prot uses the heal on cooldown because then we just have to assume it's up all the time and it feels more like something you have to maintain instead of something you can use for emergencies.
We're less sure about Inquisition. It's fine if Ret is designed around keeping it up nearly all the time because they're only spending Holy Power on damage attacks otherwise. With Holy Shield though it might feel like Prot needs to keep two Holy Power-based things running, which is probably two much to ask of a tank. In the prior model you could choose Inquisition's damage instead of Holy Shield's mitigation, but with the new Shield of the Righteous model, we realize that's probably not going to happen so we need to evaluate if that's okay.